Benjamin Pomfret
3D Printed Magnets
The devices that are printed are designed to be manufactured in less conventional arrays with very precise magnetic fields. 3D printing magnets create many different possibilities across many different fields such as biomedical devices and locations services, which are just the beginning.
The strength of the magnet is not the only consideration, there is also a great importance in the field waves of the magnet. This means that the magnet may be stronger in some directions and less in others. The main benefit to 3D printing the magnets is that the finished product is able to be more consistent.
The system described in the news article, uses specially produced filaments of magnetic micro-granulate, which is held together by a polymer binding material. The printer works similarly to many existing printers by heating up the element and moving point by point. The result is a three-dimensional object composed of roughly 90% magnetic material and 10% plastic. However when the product is first printed it is not very magnetic at all but rather it must be permanently magnetized by a stronger field magnet.
“This method allows us to process various magnetic materials, such as the exceptionally strong neodymium iron boron magnets,” said Süss. “Magnet designs created using a computer can now be quickly and precisely implemented – at a size ranging from just a few centimetres through to decimetres, with an accuracy of well under a single millimetre.”
The new printed material is also able to be manufactured with many other materials which means the shape size and magnetic force of a newly designed object may have endless varieties and many uses through customization.
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